Air-compressor.



I'. M. FEATHER.

AIB UOMPBBSSOB. APPLIoAT-IOHTILED 00T. 12. 1909.

Patented J an. 24,-

- STATES PATENT oFFIoE.

FRANK M. FEATHER, F LOS ANGELES, CALIFORNIA.

AIB-comrnsson. l

To all whom 'it-may concern:

Be it known that I, FRANK MONROE "PBATHEB, a citizen of the UnitedStates, re-

sidin at Los Angeles, in thel count of Los Ange es and, State ofCalifornia, ve invented new and useful Improvements in Ar Compressors,.ofwhich the following is a# specification,

The object of my invention is to provide an air compressor which willrapidly com-4 press large quantities of air owing to rapidit with whichit1 can be operated and carrying crankll by connecting. rods 13, and, asthe.

-in Fig. s'ame being partly broken away.

Fig. 5'- is a central vertical section of the stuiiing box, takentransversely through the driving shaft. l

In the drawings 5 and-6 designate shafts which are continuations of eachother, shaft 5 being ordinarily the drivin and 6 the driven shaft.Mounted on s aft- 5, and keyed thereto, is a cylindrical compressorframe 7. This frame is provided with a plurality of cylinders 8,preferably three in number and radially s aced around shaft 5. The frame7 forms a ollow box of general cylindrical sha e and is provided on oneend with a cover p ate 9 having a bearing 10, for the shaft 6. The innerend of shaft 6 projects in'to the interior of the frame and is rovidedonits inner end with a crank 11. he vvistons 12 are adapted to reciprocateAin cy inders 8 and are workably connected to cylinders areconcentrically arranged around s aft 5 as shown in Fi 2 the pistons willbe reciprocated` in the cy lnders upon any relative rotation of shafts 5and 6. Each of the cylinders is provided with a .port 14leading to valvebore 15 inwhich a rotary valve 16 is placed. Leading also from valvebore 15 is port-19 which ycommunicates with the at- Bpecication ofLetters Patent.

Application filed October 12, 1909. Serial No. 522,276.

the shaft 5 extends.

nects the channel 26 with the compression Patented Jan. 24, 1911.

mosphere through the air screen 100. A compression port 20 opensoutwardly from the head of each cylinder in which is disposed a checkvalve 21, which will open upon the outward stroke of the pistons and be.closed at all other times, permitting the air to pass from the clinders through the compression ports 2Q mtothe central bore 22 in theshaft 5, as follows: This shaft is provided with a plurality ofopenings' or ports 25 extending radially from the central bore andcommunicatin with the annular chamber 24. This annu ar chamber isdisosed in that part of the frame 7 surrounding the shaft 5. This shaftis alsol provided at the other 'end of its central bore with a pluralityof radially extending ports 25 which communicate with and discharge intoan annular channel 26, disposed in the perimeter of the stuffing box 27through which An air pipe 28 contank 29., establishing therebycommunlcation between the compression tank and the revolving cylinders.An ordinary check valve 30 on the air pi e 28 prevents the return of airfrom the tan to the compressor.

To cool the compressor I rovide a water jacket 31 around each cylin er.The water 1n this jacket is caused to circulate by means of thecentrifugal force exerted thereon by the rotation of the cylinders asfollows: On the front face of the compressor are disposed an outer andan inner annularA water trough 32, 33. The water is held in the troughsas 'the cylinders revolve, it is fed to the mside trough 33 through thewater supply pipe 34 and asses from this trough into the jacket 3l trough the ort 35 and thence out through ort 36 into the outer trough 32,the circu ation of the water therethrough being caused by thecentrifugal force irnparted thereto by the revolvingl cylinders. Theheated water may be taken away from the outer trough v32 through thedischargey Pipe 37- Mounted rigidly o'n the shaft 6 is an eccentric hub38 upon which the eccentric strap 39 works. Mounted on this eccentricstrap are a plurality of arms which are wor abl connected with thevalves 16 in the hea s of the various cylinders and by means ofwhichthesevalves are caused 'tov open and close -at thefproper time upon the.per

. rotation ofthe cylinders.vv As this-constitutes no part of the presentinvention, further description thereof is omitted.

If the shaft 6 is held xed and shaft 5 rotated the pistons will becaused to reciprocate inthe various cylinders. Air will be taken intoeach cylinder through the sc ,reen and pass therefromv into thecompression tank on every revolution of one of the shafts relative tothe other shaft. The valve 16 being arranged to automatically o en`onthe inward stroke of the piston an when the air Will pass into thecylinder and Will pass outwardly therefrom through the com! pressionports 20 on the outward stroke of the piston.

Having described my invention what I claim as new and desireto secure byLetters Patent is:

-l. An air compressor, comprisin a circular frame keyed to a driving shat, cylinders disposed in said frame extending-radially from said shaft,pistons'in said cylinders Workably connected to a crank on a drivenshaft and adapted to reciprocate inl said cylinders the driven shaftbeing in alinement with the driving shaft and the crank thereon carryingthe pistons being eccentric thereto, and means to feed air into saidcylinders on the relative rotation of said shafts. '2. In an aircompressor, having a driving and a stationary shaft, a plurality of aircompressing cylinders radially disposed laround said shaft pistons insaid cylinders Workably connected to a crank on a stationy ary shaft,both shafts being in alinement,

means to feed air from the cylinders when rotating to an air tankcomprising a com-` pression port communicating With a central bore inthe driving shaft, a' stufling box on.

said driving shaft having an annular air:

`channel thereon, ports in said driving'shaft extending from 'saidcentral bore to' said channel, a plpe'extending from'said channel Watertrough.-

to an air tank `and a onel Way check vvalve in the compression port topermit the air there` crank eccentric thereto, pistons on the crank andadapted to reciprocate in cylinders in the compressor frame on therelative rotation of the shafts, means to feed airto the cylinders onthe inward stroke of the pistons from the outer air, and-means to passthe air into an lairtank communicating with the cylinders on the outwardstroke of the pistons. l

5. An air compressor comprising a. substantially circular frame,adriving shaft, carrying the same, cylinders disposed in said framehaving their axes arranged radially with respect to .said shaft, ad'riven shaft in alinement with said first shaft and having a pluralityof cranks, pistons mounted in said cylinders and connected With saidcranks said frame having Water ducts in the Wall thereof, adjacent tosaid cylinders and means for guiding circulating Water into said ductsto cool said cylinders.

In Witness that I claim the foregoingll have hereunto subscribed my namethis 5th day of 0ctober, 1909. l

FRANK FEATHER.

Witnesses EDMUND A. S'rnAUsE,-

E'rmin COLEMAN.

